Class: Bulldog::Attachment::Video

Inherits:
Base
  • Object
show all
Includes:
HasDimensions
Defined in:
lib/bulldog/attachment/video.rb

Defined Under Namespace

Classes: AudioTrack, Track, VideoTrack

Instance Attribute Summary

Attributes inherited from Maybe

#name, #record, #saved, #stream, #value

Instance Method Summary collapse

Methods included from HasDimensions

#aspect_ratio, #dimensions, #height, included, #width

Methods inherited from Base

#content_type, #destroy, #examine, #file_name, #file_size, #initialize, #path, #process, #process!, #save, try, #url

Methods inherited from Maybe

#==, #copy_for, handle, #initialize, #interpolate_path, #interpolate_url, #load, #read_storable_attributes, #reflection, #reload, #saved?, #type

Constructor Details

This class inherits a constructor from Bulldog::Attachment::Base

Instance Method Details

#audio_tracks(style_name = nil) ⇒ Object

Return the video tracks of the named style, as an array of AudioTrack objects.

AudioTrack objects do not yet have any useful methods.



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# File 'lib/bulldog/attachment/video.rb', line 48

def audio_tracks(style_name=nil)
  examine
  @original_audio_tracks
end

#duration(style_name) ⇒ Object

Return the duration of the named style, as an ActiveSupport::Duration.

This runs ffmpeg for, and only for, the original style.

style_name defaults to the attribute’s #default_style.



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# File 'lib/bulldog/attachment/video.rb', line 15

def duration(style_name)
  from_examination :@original_duration
end

#unload ⇒ Object 



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# File 'lib/bulldog/attachment/video.rb', line 55

def unload
  super
  instance_variables.grep(/@original_/).each do |name|
    instance_variable_set(name, nil)
  end
end

#video_tracks(style_name = nil) ⇒ Object

Return the video tracks of the named style, as an array of VideoTrack objects.

Each VideoTrack has:

* <tt>#duration</tt> - the duration of the video track.
* <tt>#dimensions</tt> - the [width, height] of the video
  track.



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# File 'lib/bulldog/attachment/video.rb', line 29

def video_tracks(style_name=nil)
  style_name ||= reflection.default_style
  if style_name.equal?(:original)
    from_examination :@original_video_tracks
  else
    style = reflection.styles[style_name]
    video_tracks(:original).map do |video_track|
      dimensions = resize_dimensions(dimensions(:original), style)
      VideoTrack.new(:dimensions => dimensions)
    end
  end
end